弱场区无漏泄电缆无线传输系统，是利用隧道天线代替漏泄同轴电缆解决铁路隧道、地铁、矿山及其它弱场区电波传播的无线通信技术。这种传输方式，经在渝达线中梁山隧道内试验结果表明，它可降低工程造价50％左右，工期也可缩短一半。1隧道天线的传输效果及传播衰减1．1传播效果 Weak field leak-free cable wireless transmission system, is the use of tunnel antenna instead of leaky coaxial cable to solve the railway tunnel, subway, mine and other weak-field radio propagation wireless communications technology. This transmission method, the test results in the Zhongda Liang tunnel in the Yu-Da line show that it can reduce construction costs by about 50%, and the construction period can be shortened by half. 1 tunnel antenna transmission and propagation attenuation 1.1 propagation effect